B767-200 first officer reported both lateral and vertical deviation for a resolution advisory. The a...

Attributes
ACN	1542125
Time
Date	201805
Local Time Of Day	1801-2400
Place
Locale Reference	ZZZ.TRACON
State Reference	US
Aircraft 1
Make Model Name	B767-200
Operating Under FAR Part	Part 121
Flight Phase	Climb
Route In Use	SID ZZZZZ
Flight Plan	IFR
Component
Aircraft Component	Traffic Collision Avoidance System (TCAS)
Person 1
Function	First Officer
Qualification	Flight Crew Flight Instructor Flight Crew Instrument Flight Crew Multiengine Flight Crew Flight Engineer Flight Crew Air Transport Pilot (ATP)
Experience	Flight Crew Last 90 Days 45 Flight Crew Total 14000 Flight Crew Type 100
Events
Anomaly	Aircraft Equipment Problem Less Severe Conflict Airborne Conflict Deviation - Altitude Excursion From Assigned Altitude Deviation - Procedural Clearance Deviation - Track / Heading All Types

Narrative:

Upon departure from ZZZ; we climbed through an overcast layer and were VFR at 2;000 ft. We then received a traffic advisory (TA) displaying a descending aircraft in front of us. This was followed by a resolution advisory (RA) directing us to descend. We initiated the directed escape maneuver and there was a constant indication that the target aircraft was virtually on top of us. ATC was apprised about the deviation from the SID as we descended towards the ocean; making a left turn while accelerating. ATC advised that they showed no other aircraft in our vicinity. We suspected this was a false indication as the intruder aircraft matched our every move. The transponder selector was switched to 'ALT2' and the RA stopped. We then re-joined the SID. No further RA's took place; however a second TA was displayed and ATC advised that they were not showing any traffic in our immediate vicinity. The transponder selector was then placed to 'XNPDR2' and the TA disappeared. The flight continued without further incident.

Original NASA ASRS Text

Title: B767-200 First Officer reported both lateral and vertical deviation for a Resolution Advisory. The advisory was soon suspected to be a false indication.

Narrative: Upon departure from ZZZ; we climbed through an overcast layer and were VFR at 2;000 ft. We then received a traffic advisory (TA) displaying a descending aircraft in front of us. This was followed by a resolution advisory (RA) directing us to descend. We initiated the directed escape maneuver and there was a constant indication that the target aircraft was virtually on top of us. ATC was apprised about the deviation from the SID as we descended towards the ocean; making a left turn while accelerating. ATC advised that they showed no other aircraft in our vicinity. We suspected this was a false indication as the intruder aircraft matched our every move. The transponder selector was switched to 'ALT2' and the RA stopped. We then re-joined the SID. No further RA's took place; however a second TA was displayed and ATC advised that they were not showing any traffic in our immediate vicinity. The transponder selector was then placed to 'XNPDR2' and the TA disappeared. The flight continued without further incident.

Data retrieved from NASA's ASRS site and automatically converted to unabbreviated mixed upper/lowercase text. This report is for informational purposes with no guarantee of accuracy. See NASA's ASRS site for official report.

B767-200 first officer reported both lateral and vertical deviation for a resolution advisory. The advisory was soon suspected to be a false indication.